VMWare Workstation 6.x unrecoverable error

I am running VMware workstation on a Server 2008 environment.
I have three VMs that are running on it. Last night, a power bump caused the server to reboot. 1 of the VM's came up fine. The other 2 are giving me the following error:
"VMWare Workstation unrecoverable error: (vmx) NOT_IMPLEMENTED c:\ob\bora-45731\bora\lib\disklib\sparseChecker c:1242 A log is available in F:/.../vmware.log A core file is available in "C:/.../VMWare/vmware-vmx-3944.dmp"

I have searched all day for an answer or fix on how to get these VMs back up and running. Any help would be GREATLY appreciated!

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Are you sitting at the console of your 2008 server, or are your Remote Desktop in? If using RDP try different settings. If running full screen set to run in a window. If using 8 bit color try 16 bit etc. Workstation 6 sometimes did not play well with RDP.

Install vCenter Converter Standalone and try to clone the machines after powering them down to a different destination and then try to power them on.
I am certain that the server power outage messed up the VMDK files of the Virtual Machines.

bhatiavk - Yes, I have opened the vmx file and made sure everything was as it should be. No luck there.

bgoering - Yes, I am looking at it through a RDP session. I did play with the settings a little bit, but no joy. The strange thing is that the one is still starting up and working just fine with no adjustments needed.

arunraju - I will try that and let you know how it goes. I am certain that something got messed up as well. I just didn't know how to fix it. :)

I was able to download the VMWare VCenter Converter Standalone. On step one, Specify source I browsed to my machine and clicked next and I got "A general system error occurred: Remote server closed connection after 0 response bytes read" This after retrieving source machine information for about an hour. Any ideas?

I was not able to get the VM backup and running, even after doing a checkdisk, but I was able to attach and get the majority of my data off of it. Thank you for your assistance in trying to get me backup and running.